HYDRAFORCE
5278703
$80.05 USD
- HYDRAFORCE
- Material:5278703
- Model:EHPR98-G38B-0-G-12ER
- Summary:PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE
Due to extremely high demand, please call 920-337-0234 for availability
The Hydraforce 5278703 (5278703) is a state-of-the-art hydraulic component designed for advanced fluid power applications. This EHPR98G38XXX model is a direct-acting, spool-type, proportional, pressure reducing relieving valve that integrates seamlessly into various hydraulic systems. Constructed as a drop-in, flange-mounted cartridge type valve, it is specifically engineered for use with mineral-based or synthetic hydraulic fluids that possess lubricating properties. This third-generation valve features an integral coil which is central to its operation but is not serviceable, emphasizing the need for precision in installation and maintenance. The functionality of the EHPR98G38XXX allows for the regulated pressure to be proportionally controlled by the input electrical current within specified pressure ranges. It offers quick response times and low leakage, enhancing both efficiency and reliability. The standard configuration of this valve is suitable for applications with inlet pressures up to 34 bar (500 psi), where rapid response and increased volume at the control port are critical. For higher-pressure scenarios up to 69 bar (1000 psi), where decreased volume at the control port is necessary, a damped plunger variant is recommended to maintain stability and performance. Additional features of this model include an economical drop-in style for ease of installation, multiple mounting plate options for flexibility in application, several regulated pressure ranges to suit diverse operational requirements, and a retrofit option for EHPR98T38 models. A top-mounted connector and optional screen further enhance its utility and adaptability in complex hydraulic setups.
Unit weight:
0.27 kg (0.60 lb)
Internal wetted surface area:
148 cm² (23.0 in²)
| Ratings | Pressure Ratings Pressure rating: 44.8 bar (650 psi) At port 1 34.5 bar (500 psi) At port 2 (standard plunger) 69 bar (1000 psi) At port 2 (damped plunger) 34.5 bar (500 psi) At port 3 Proof pressure: 207 bar (3000 psi) Ports 1, 2 54 bar (780 psi) Port 3 Burst pressure: 249 bar (3625 psi) All ports pressurized Control pressure at maximum control current: 21 bar (305 psi) EHPR98-G38A 25 bar (363 psi) EHPR98-G38B 30 bar (435 psi) EHPR98-G38C Flow Ratings Flow rating: 23 lpm (6 gpm) Maximum internal leakage: 50 ml/min (3.1 in³/min) At 34.5 bar (500 psi) de-energized Other Ratings Cycle life: 10 million cycles Environmental rating: IP69K Corrosion protection: 960 hour salt spray per ASTM B117 Temperature Ratings Operating fluid temperature: -40 to 149 °C (-40 to 300 °F) HNBR -26 to 204 °C (-15 to 400 °F) Fluorocarbon Storage temperature: -40 to 70 °C (-40 to 158 °F) Ambient temperature: -40 to 120 °C (-40 to 248 °F) |
| Operating Parameters | Fluids:
Mineral based or synthetic hydraulic fluid with lubricating properties Fluid viscosity range: 7.4 to 420 cSt |
| Electrical Parameters | Maximum control current:
1.050 A At 10 V 0.0880 A At 12 V 0.720 A At 14 V 0.525 A At 20 V 0.440 A At 24 V 0.360 A At 28 V Valve inductance: 77 mH 10 V coil 118 mH 12 V coil 165 mH 14 V coil 301 mH 20 V coil 446 mH 24 V coil 680 mH 28 V coil Coil resistance: 4.83 ohm 10 V coil 7.28 ohm 12 V coil 10.05 ohm 14 V coil 18.35 ohm 20 V coil 29.54 ohm 24 V coil 40.36 ohm 28 V coil Hysteresis: 4 % At 120 Hz PWM |
| Performance | |
| Installation Specifications | Cavity:
VC-G028 Standard configuration Drop-in cavities Installation type: Flange mounted Orientation restriction: None Mounting screw torque: 3 to 4 N-m (2.2 to 3.0 ft-lb) Note: For retro-fitting into older drop-in cavities and other mounting options, see "Mounting-options-for-G3-valves" technical reference Mounting options for G3 Valves |
| Order Code | POSITION CODE DESCRIPTION EHPR98-G38DG-H-J-KL-U D Max Regulated Pressure D A 21 bar (305 psi) D B 25 bar (363 psi) D C 30 bar (435 psi) G Screen G BLANK NONE G S 100 Mesh Screen H Line Body H 0 No Body J Seal J G HNBR (Hydrogenated Nitrile Butadiene Rubber) J V Fluorocarbon J P Polyurethane K Coil Voltage K 10 10 VDC K 12 12 VDC K 14 14 VDC K 20 20 VDC K 24 24 VDC K 28 28 VDC L Coil Termination L EJ E-Coil, AMP Jr. L ER E-Coil, Deutsch L EY2A E-Coil, Metri-Pack 150.2 U Mounting Plate U BLANK None U G Standard Single Valve Plate U T Retro-Fit Plate |
Mounting plate:
HF P/N 4595096
Use with standard VC-G028 cavity
HF P/N 4210226
Use with retrofit VC-T011 cavity
Mounting screw:
M5 x 0,8 x 12 mm long, HF P/N: 4002609 (sold separately)
Use with standard VC-G028 cavity
M4 x 00.7 x 12 mm long, HF P/N: 4001015 (sold separately)
Use with retrofit VC-T011 cavity
Seal kit:
SK-G028-X
X=seal option
Seal kit installation instructions
Ported test body:
HF P/N: 71612X0
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